The Display Keyboarfd may be on the way in the near future.  There's a U.S. patent for the Display Keyboard held by Mr. Elkin Acevedo. The invention is much much older than Levedev's invention and Elkin's keyboard is exactly the same as the Optimus Keyboard.  Lebedev’s U.S. patents are non-existent.  As far as I know the Display Keyboard is being developed here in the United States.

This is the Website of the Display Keyboard if you have any questions:

http://www.displaykeyboard.com
 

Maverick